I would agree that the 230S is a pretty good model in the sim.
I felt it needed a bit of improvement, though. It has a horrible drift to the left in the Stability/Beginner mode, so I made a mix to get rid of that rather than using a bunch of aileron trim. I also put in a pitch curve to make it hover better at mid-throttle. Rather than try to explain the details, I posted the customization file
here that you can download and add to your RealFlight data folder as a custom version of the 230S. (It doesn't change the original version.)